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Improper Input Validation Affecting xz-utils package, versions <5.2.5-2ubuntu0.1

medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.6% (79th percentile)
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NVD
8.8 high
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SUSE
8.4 high
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Red Hat
8.8 high

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  • Snyk ID SNYK-UBUNTU2110-XZUTILS-2442557
  • published 8 Apr 2022
  • disclosed 31 Aug 2022
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Introduced: 8 Apr 2022

CVE-2022-1271 Open this link in a new tab
CWE-20 Open this link in a new tab

How to fix?

Upgrade Ubuntu:21.10 xz-utils to version 5.2.5-2ubuntu0.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xz-utils package and not the xz-utils package as distributed by Ubuntu. See How to fix? for Ubuntu:21.10 relevant fixed versions and status.

An arbitrary file write vulnerability was found in GNU gzip's zgrep utility. When zgrep is applied on the attacker's chosen file name (for example, a crafted file name), this can overwrite an attacker's content to an arbitrary attacker-selected file. This flaw occurs due to insufficient validation when processing filenames with two or more newlines where selected content and the target file names are embedded in crafted multi-line file names. This flaw allows a remote, low privileged attacker to force zgrep to write arbitrary files on the system.